Mens Plush Sleepwear Batman Lounge Pajama Pants - Black 100% Polyester Warm & Comfortable fabric: 100% Polyester. Ultra warm and comfortable to wear. Drawstrings at centre is adjustable. Fabric covered elastic waistband for added comfort. Batman fully Printed on it. Relaxed styling provides a comfortable and casual fit. Perfect for a chilly winter day which makes an excellent gift!